Document and Entity Information (USD $)	9 Months Ended
	Feb. 29, 2012	Nov. 30, 2011
Document and Entity Information
Entity Registrant Name	YANEX GROUP, INC.
Document Type	10-Q
Document Period End Date	Feb. 29, 2012
Amendment Flag	false
Entity Central Index Key	0001521420
Current Fiscal Year End Date	--05-31
Entity Common Stock, Shares Outstanding		2,970,000
Entity Public Float		$ 0
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	No
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3